<template>
    <el-container class="home-container">
        <el-header>
            <div>
                <img src="../assets/heima.png" alt="">
                <span>电商后台管理系统</span>
            </div>
            <el-button class="info" @click="logout">退出</el-button>
            </el-header>
        <el-container>
            
            <el-aside :width="isCollapse?'64px':'200px'">
                <div class="toggle-button" @click="toggleCollapse">|||</div>
                <el-menu
                class="el-menu-vertical-demo"
                background-color="#333744"
                text-color="#fff"
                active-text-color="#409EFF"
                unique-opened
                :collapse="isCollapse"
                :collapse-transition ="false"
                router=""
                :default-active="activePath"
                >

                <el-submenu :index="item.id.toString()" v-for="item in menuList" :key="item.id">
                    <!-- 一级菜单 -->
                    <template slot="title">
                    <i :class="iconObj[item.id]"></i>
                    <span>{{item.authName}}</span>
                    </template>
                    <!-- 二级菜单 -->
                    <el-menu-item :index="subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveActiveStatus(subItem.path)">
                        <template slot="title">
                            <i class="el-icon-menu"></i>
                            <span>{{subItem.authName}}</span>
                        </template>
                    </el-menu-item>
                </el-submenu>
                </el-menu>
            </el-aside>
            <el-main>
                <router-view></router-view>
            </el-main>
        </el-container>
    </el-container>
</template>

<script>
export default {
    name: 'Home',
    
    data() {
        return {
            menuList:[],
            iconObj:{
                '125': 'iconfont icon-user',
                '103': 'iconfont icon-tijikongjian',
                '101': 'iconfont icon-shangpin',
                '102': 'iconfont icon-danju',
                '145': 'iconfont icon-baobiao'
            },
            isCollapse:false,
            activePath:''
        }
    },
    created(){
        this.getMenuList()
        this.activePath =  window.sessionStorage.getItem('activePath')
    },
    methods: {
        logout() {
            window.sessionStorage.clear()
            this.$router.push('/login')
        },
        async getMenuList(){
            const {data:res} = await this.$http.get('menus')
            if(res.meta.status!==200) return this.$message.error(res.meta.msg)
            this.menuList = res.data
        },
        toggleCollapse(){
            this.isCollapse = !this.isCollapse
        },
        saveActiveStatus(activePath){
            window.sessionStorage.setItem('activePath',activePath)
            this.activePath = activePath
        }
    }
}
</script>

<style scoped>
.home-container{
    height: 100%;
}
.el-header{
    background-color: #373d41;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-left: 0;
    font-size: 24px;
    color: #fff;
}
.el-header div{
    display: flex;
    align-items: center;
}
.el-header div span{
    margin-left: 10px;
}
.el-aside{
    background-color: #333744;
}
.el-aside .el-menu{
    border-right: none;
    box-sizing: border-box;
}
.el-main{
    background-color: #eaedf1;
}
.iconfont{
    margin-right: 10px;
}
.toggle-button{
    background-color: #4a5064;
    color: #fff;
    line-height: 24px;
    text-align: center;
    letter-spacing: 0.2em;
    cursor: pointer;
}
</style>